Semiconductor stocks surge despite interest rate shock… Is it a big reversal signal? / Will volatility explode this week on 'Quadruple Witching Day'? | Mirae Asset Global Investments Director Choi Chang-gyu

[#RealMarket] Semiconductor stocks surge despite interest rate shock… Is it a big reversal signal? / Will volatility explode this week on 'Quadruple Witching Day'? | Mirae Asset Global Investments Director Choi Chang-gyu
Watch on YouTube ↗  |  September 06, 2026 at 11:00  |  38:31  |  815 Money Talk (815머니톡)
Speakers
Choi Chang-gyu — Director, NH Investment & Securities

Summary

Choi Chang-gyu, Director of ETF Consulting at Mirae Asset Global Investments, reviews US and Korean markets after strong US jobs data and new AI model launches. He argues AI-driven memory and storage demand remains the market's core, with Broadcom and Dell earnings confirming AI infrastructure demand and Korean HBM and battery ESS names as beneficiaries. He highlights retail ETF flows showing risk-on positioning into semiconductor leverage, Nasdaq, crypto proxies, and SK Group, while expecting limited volatility around the Korean September expiry and CPI/PPI as the key macro catalysts.

  • Strong US August payrolls briefly lifted yields, but the market focused on new AI agent models from OpenAI, Anthropic, Google, and Meta.
  • Memory and storage names such as SK Hynix, Micron, and SanDisk rallied because AI agent adoption increases compute and storage demand.
  • Broadcom's custom AI accelerator and networking revenue surge signals AI spending broadening beyond Nvidia GPUs.
  • Dell's AI server backlog and raised guidance support the AI data-center demand cycle.
  • The Korean battery sector is seen transitioning from EV NCM to US ESS and UPS, with Samsung SDI flagged as an AI data-center ESS beneficiary.
  • Retail flows showed a risk-on rotation into SOXL, Nasdaq leverage, crypto proxy stocks, and SK Group-related names.
  • US data-center power and permitting bottlenecks are becoming a bigger constraint than GPU supply.
  • CPI and PPI are the key macro catalysts, while Korean expiry volatility is expected to be limited.
Ideas
Choi Chang-gyu Director, NH Investment & Securities 2:15
AI agent usage drives memory/storage demand.
New AI agent models such as OpenAI's GPT-6/Astra increase AI compute and usage, meaning the direct beneficiaries are memory and storage suppliers rather than all AI service platforms. The speaker highlights SK Hynix ADR rising 8.14%, Micron rising 6.1% above $1,000, and SanDisk rising 11.9%, and expects this to pull foreign buying into Korean semiconductor and memory names this week.
Choi Chang-gyu Director, NH Investment & Securities 2:15
AI agent usage drives memory/storage demand.
SK Group stocks moved together, not just SK Hynix, with SK Hynix up 3.2%, SK Square up 6.1%, and SK Inc up 5.1%, amid news that an ETF provider would launch an SK Group-only ETF. The speaker sees broader market interest forming around SK Group beyond semiconductors and HBM, and notes SK Inc's chart is stabilizing near its 122-day moving average after a nearly 50% drawdown from its high.
Choi Chang-gyu Director, NH Investment & Securities 4:48
Retail buying crypto proxy equities.
Retail weekly net buying showed demand for crypto-exposed proxy stocks Strategy, Bitdeer, and Iren, interpreted as positioning for higher Bitcoin and Ethereum prices through virtual-asset substitute equities.
Choi Chang-gyu Director, NH Investment & Securities 6:20
Retail piled into leveraged semiconductor ETF.
Weekly retail flow in US-listed semiconductor ETFs showed investors selling the one-times semiconductor ETF and the three-times inverse semiconductor ETF while concentrating buying in the three-times leveraged semiconductor ETF. The speaker interprets this as a strong short-term bet on a semiconductor rebound, especially after new AI model news reignited memory stocks.
Choi Chang-gyu Director, NH Investment & Securities 6:35
Retail flows favor Nasdaq 100 upside.
Retail investors continue to allocate to long-term US index products such as QQQM, while leveraged Nasdaq products such as TQQQ and QLD also saw net buying. The speaker reads this as positioning for continued Nasdaq 100 upside alongside persistent demand for broad US large-cap index exposure.
Choi Chang-gyu Director, NH Investment & Securities 8:47
Custom AI chips broaden Broadcom demand.
Broadcom's AI semiconductor revenue reached $16.7bn, growing 221% year-over-year and 54% quarter-over-quarter, and now accounts for more than half of total revenue. Hyperscalers such as Google and Meta are expanding their own AI accelerators, driving simultaneous demand for Broadcom's custom AI chips and data-center networking, which shows AI investment broadening beyond Nvidia GPUs.
Choi Chang-gyu Director, NH Investment & Securities 9:57
Custom AI chips broaden Korean HBM demand.
If Broadcom's custom AI accelerator revenue surges, demand for HBM, advanced packaging, and optical networking should also expand. This gives Samsung Electronics and SK Hynix a chance to broaden their HBM customers and demand sources beyond Nvidia to custom accelerator vendors.
Choi Chang-gyu Director, NH Investment & Securities 10:10
Dell proves AI server demand intact.
Dell's second-quarter revenue rose 58% year-over-year to $47bn, AI server revenue reached $16.4bn, new AI server orders hit $60.9bn, and backlog reached $95bn. Orders are nearly 3.7 times AI server revenue, showing AI server demand is outrunning supply and installation capacity. Forward guidance was also raised, though the speaker cautions that margin quality and cash conversion will determine how much the backlog matters.
Choi Chang-gyu Director, NH Investment & Securities 15:56
K-battery shifts to ESS/UPS transition.
Korean battery makers are not in structural collapse but in a transition from EV NCM batteries toward US ESS, AI data-center UPS, and LFP. US ESS demand is projected to grow from 55GW in 2023 to 320GW by 2035, AI data-center UPS battery demand is growing at a 47% CAGR toward 135GW by 2035, and US decoupling from Chinese batteries creates an opportunity. Re-rating depends on how quickly Korean battery makers shift their portfolios and build non-China supply chains.
Choi Chang-gyu Director, NH Investment & Securities 19:19
Samsung SDI benefits from AI ESS.
AI data-center expansion requires stable power and UPS, sharply increasing large-format ESS demand. Tesla's Megapack expansion in Texas could order about 23GW of battery cells from Samsung SDI and LG Energy Solution, with supply potentially starting in Q4 2026. This would improve Samsung SDI's utilization and earnings and could narrow its valuation discount to LG Energy Solution.
Choi Chang-gyu Director, NH Investment & Securities 30:13
SK Group gaining broad market interest.
SK Group stocks moved together, not just SK Hynix, with SK Hynix up 3.2%, SK Square up 6.1%, and SK Inc up 5.1%, amid news that an ETF provider would launch an SK Group-only ETF. The speaker sees broader market interest forming around SK Group beyond semiconductors and HBM, and notes SK Inc's chart is stabilizing near its 122-day moving average after a nearly 50% drawdown from its high.
Choi Chang-gyu Director, NH Investment & Securities 37:38
Korean market likely positive this week.
After US memory semiconductor shares rose on September 4, the speaker expects the Korean market to start the week positively. With foreign futures and options positioning neutral or low-volatility ahead of the September quad witching, he judges that the market will not be bad this week, though CPI/PPI remain the key swing factors.
Up Next

This 815 Money Talk (815머니톡) video, published September 06, 2026, features Choi Chang-gyu discussing SNDK, MU, 000660.KS, BTDR, MSTR, IREN, SOXL, QQQM, TQQQ, QLD, AVGO, 005930.KS, DELL, KWEB, 006400.KS, 402340.KS, 034730.KS, KOSPI 200. 12 trade ideas extracted by AI with direction and confidence scoring.

Speakers: Choi Chang-gyu  · Tickers: SNDK, MU, 000660.KS, BTDR, MSTR, IREN, SOXL, QQQM, TQQQ, QLD, AVGO, 005930.KS, DELL, KWEB, 006400.KS, 402340.KS, 034730.KS, KOSPI 200